Heimatec gmbh has developed a ht-quick changing system for static and driven/rotating tools. This is found to be reliable system for cnc lathes with vdi 69880 shank and standard bolt on type. Ht system offers fool proof taper and face contact quick clamping design, which ensures highest accuracy, rigidity, and working safety. It provides with easy to use flexible system for using collet adaptors, weldon adaptors, shell mill adaptor, boring bar holder, adaptor for shrinking, to use on basic static or driven/rotating tool holder. Production program also includes tool holder ht with km taper. Ht-quick changing system reduces production cost by offering simple to use, rigid, accurate-modular tool holding system for static and driven tools on cnc lathes.